MIL-PRF-24251/5D
TABLE 1.Characteristics.
Dash
Heat dissipation
A
B
C
Weight
Tube envelope
Tube
Retainer
.060
.015
no.
temp. reduction
grams
socket
(base)
Style
Length
in C (minimum)
Max
max
ref
ref
(1.48)
(0.38)
nom.
1
45
1.344
1.530
.917
9.0
T-5 1/2
1.125
(34.14)
(38.86)
(23.29)
(28.58)
MIL-DTL-
M24251/4-1
12883/10
2
95
1.844
2.030
.917
10.7
T-5 1/2
1.500
(46.84)
(51.56)
(23.29)
(38.10)
3
70
2.344
2.530
.917
13.0
T-5 1/2
2.000
(59.54)
(64.26)
(23.29)
(50.80)
4
50
1.344
1.530
1.036
10.2
T-6 1/2
1.125
(34.14)
(38.86)
(26.31)
(28.45)
MIL-DTL-
M24251/4-2
12883/11
5
86
1.844
2.030
1.036
12.0
T-6 1/2
1.562
(46.84)
(51.56)
(26.31)
(39.62)
6
84
2.344
2.530
1.036
15.0
T-6 1/2
2.000
(59.54)
(64.26)
(26.31)
(50.80)
REQUIREMENTS:
The shield, locking mechanism, liner, and other parts shall be designed to meet the requirements in MIL-DTL-
24251, and to fit the tube envelope, tube socket, and retainer (base) specified in table I.
Dimensions and configuration: See figure 1 and table I.
Material:
Spring: Beryllium copper, ASTM-B194, ASTM-B196/B196M and ASTM-B197/B197M.
Liner: Beryllium copper, ASTM-B194.
Shell: Aluminum alloy, SAE-AMS-QQ-A-250 and ASTM-B209.
Finish:
Spring: Black cadmium plate, SAE-AMS-QQ-P-416, class 1, type II, optional finish: Henderlube or equal.
Liner: Black cadmium plate, SAE-AMS-QQ-P-416, class 1, type II, optional finish: Henderlube or equal.
Shell: Black anodize - type II in accordance with MIL-A-8625, optional finish: Henderlube or equal.
Construction: The spring shall be held in place by friction or by mechanical means if the maximum diameter is
smaller than the inside diameter of the shield. The tension shall be such as will insure maximum compression of
.125 inch (3.18 mm) over seated tube. The force required to compress spring to .375 inch (9.53 mm) within 1.5 to
2.5 pounds. Spirals shall not touch each other. The end of the coil spring shall not contact the electron tube
envelope.
Installation force shall not exceed 20 pounds.
Engaging torque: 20 inch-pounds maximum.
The Part or Identifying Number (PIN) consists of the basic number of this specification sheet, preceded by the letter
"M", and a dash number taken from table I.
Example:
M24251/5-1
Basic document
Dash number
number
from table
2
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